Update of the image loader example code

vogellacompany · Oct 13, 2023 · 8eaed77 · 8eaed77
1 parent 2f007ec
commit 8eaed77
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Showing 3 changed files with 38 additions and 1 deletion.
diff --git a/com.vogella.service.imageloader/.project b/com.vogella.service.imageloader/.project
@@ -25,9 +25,26 @@
 			<arguments>
 			</arguments>
 		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.m2e.core.maven2Builder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.eclipse.m2e.core.maven2Nature</nature>
 		<nature>org.eclipse.pde.PluginNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 	</natures>
+	<filteredResources>
+		<filter>
+			<id>1697119637238</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
 </projectDescription>
diff --git a/...gella.service.imageloader/src/com/vogella/imageloader/services/IBundleResourceLoader.java b/...gella.service.imageloader/src/com/vogella/imageloader/services/IBundleResourceLoader.java
@@ -1,13 +1,18 @@
 package com.vogella.imageloader.services;
 
 import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.graphics.Image;
 
 public interface IBundleResourceLoader {
 
-    // service does NOT recycle the provided image
+    // service does NOT dispose the provided image
     // the consumer of the image is responsible for calling the dispose()
     // method on the created Image object once the Image is not required anymore
     // can be automated with the usage of LocalResourceManager
 
     public ImageDescriptor getImageDescriptor(Class<?> clazz, String path);
+
+    // service does NOT dispose the provided image nor the created
+    // caller needs to dispose them
+    public Image resize(Image image, int width, int height);
 }
diff --git a/...e.imageloader/src/com/vogella/imageloader/services/internal/BundleResourceLoaderImpl.java b/...e.imageloader/src/com/vogella/imageloader/services/internal/BundleResourceLoaderImpl.java
@@ -5,6 +5,10 @@
 import org.eclipse.core.runtime.FileLocator;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.GC;
+import org.eclipse.swt.graphics.Image;
+import org.eclipse.swt.widgets.Display;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.FrameworkUtil;
 import org.osgi.service.component.annotations.Component;
@@ -22,4 +26,15 @@ public ImageDescriptor getImageDescriptor(Class<?> clazz, String path) {
         return ImageDescriptor.createFromURL(url);
     }
 
+    @Override
+	public Image resize(Image image, int width, int height) {
+		Image scaled = new Image(Display.getDefault(), width, height);
+		GC gc = new GC(scaled);
+		gc.setAntialias(SWT.ON);
+		gc.setInterpolation(SWT.HIGH);
+		gc.drawImage(image, 0, 0, image.getBounds().width, image.getBounds().height, 0, 0, width, height);
+		gc.dispose();
+//		image.dispose(); // caller need to do this
+		return scaled;
+	}
 }